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CPC
C21B13/0093
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Parent Industries
C
CHEMISTRY METALLURGY
C21
Iron metallurgy
C21B
MANUFACTURE OF IRON OR STEEL
C21B13/00
Making spongy iron or liquid steel, by direct processes
Current Industry
C21B13/0093
Protecting against oxidation
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Patents Grants
last 30 patents
Information
Patent Grant
Method for carburization of HDRI produced in H2 based direct reduct...
Patent number
12,180,554
Issue date
Dec 31, 2024
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Christian Boehm
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Integration of DR plant and electric DRI melting furnace for produc...
Patent number
11,788,159
Issue date
Oct 17, 2023
Midrex Technologies, Inc.
Todd Michael Astoria
C21 - METALLURGY OF IRON
Information
Patent Grant
Direct reduced iron (DRI) heat treatment, products formed therefrom...
Patent number
11,427,877
Issue date
Aug 30, 2022
Nucor Corporation
Bradford Granger True
C21 - METALLURGY OF IRON
Information
Patent Grant
Binding process for pyrophoric steelmaking byproducts
Patent number
10,907,225
Issue date
Feb 2, 2021
J.C. Steele & Sons, Inc.
Charles M. Steele
C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information
Patent Grant
Method of utilizing furnace off-gas for reduction of iron oxide pel...
Patent number
10,787,717
Issue date
Sep 29, 2020
Narong Limastian
C21 - METALLURGY OF IRON
Information
Patent Grant
Method for treating animal waste
Patent number
10,766,801
Issue date
Sep 8, 2020
EnviroKure Incorporated
William Blaine
C05 - FERTILISERS MANUFACTURE THEREOF
Information
Patent Grant
Method for treating animal waste
Patent number
9,643,868
Issue date
May 9, 2017
EnviroKure, Inc.
William Blaine
C05 - FERTILISERS MANUFACTURE THEREOF
Information
Patent Grant
Reclaiming and inhibiting activation of DRI dust and fines
Patent number
9,464,338
Issue date
Oct 11, 2016
Nu-Iron Technology, LLC
David Hendrickson
B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information
Patent Grant
Process and device for charging into a smelting unit
Patent number
9,365,906
Issue date
Jun 14, 2016
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Thomas Eder
C21 - METALLURGY OF IRON
Information
Patent Grant
Direct reduction of iron (DRI) pellet treatments
Patent number
9,200,339
Issue date
Dec 1, 2015
ChemTreat, Inc.
Donald C. Roe
B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information
Patent Grant
Reclaiming and inhibiting activation of DRI fines
Patent number
9,045,809
Issue date
Jun 2, 2015
Nu-Iron Technology, LLC
David Hendrickson
C21 - METALLURGY OF IRON
Information
Patent Grant
Apparatus for and method of production of iron, semi steel and redu...
Patent number
8,753,422
Issue date
Jun 17, 2014
Keki Hormusji Gharda
C21 - METALLURGY OF IRON
Information
Patent Grant
Process and device for charging into a smelting unit
Patent number
8,728,384
Issue date
May 20, 2014
Siemens Vai Metals Technologies GmbH
Thomas Eder
C21 - METALLURGY OF IRON
Information
Patent Grant
Hot briquette iron and method for producing the same
Patent number
8,404,017
Issue date
Mar 26, 2013
Kobe Steel, Ltd.
Hidetoshi Tanaka
C21 - METALLURGY OF IRON
Information
Patent Grant
Process and apparatus for producing metals and/or primary metal pro...
Patent number
8,361,189
Issue date
Jan 29, 2013
Siemens Vai Metals Technologies GmbH
Martin Schmidt
C21 - METALLURGY OF IRON
Information
Patent Grant
Process and apparatus for producing metals and/or primary metal pro...
Patent number
8,236,090
Issue date
Aug 7, 2012
Siemens Vai Metals Technologies GmbH
Martin Schmidt
C21 - METALLURGY OF IRON
Information
Patent Grant
Conveyor system, composite system and method for coupling metallurg...
Patent number
8,202,474
Issue date
Jun 19, 2012
Siemens Vai Metals Technologies GmbH
Harald Fischer
C21 - METALLURGY OF IRON
Information
Patent Grant
Granulated metallic iron superior in rust resistance and method for...
Patent number
8,187,359
Issue date
May 29, 2012
Mesabi Nugget LLC
Koji Tokuda
C21 - METALLURGY OF IRON
Information
Patent Grant
Conveyor system, composite system and method for coupling metallurg...
Patent number
7,858,021
Issue date
Dec 28, 2010
Siemens Vai Metals Technologies GmbH & Co.
Harald Fischer
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for producing iron briquettes and/or cold iron sponge
Patent number
6,241,804
Issue date
Jun 5, 2001
Voest-Alpine Industrieanlagenbau GmbH
Gerald Rosenfellner
C21 - METALLURGY OF IRON
Information
Patent Grant
Direct reduced iron discharge system and method
Patent number
6,214,086
Issue date
Apr 10, 2001
Midrex International B.V. Rotterdam, Zurich Branch
Stephen Craig Montague
C21 - METALLURGY OF IRON
Information
Patent Grant
Direct steel-making process
Patent number
5,298,056
Issue date
Mar 29, 1994
Virgin Metals (Canada) Limited
Patrick E. Cavanagh
C21 - METALLURGY OF IRON
Information
Patent Grant
Process for compacting iron particles and subsequent breaking apart...
Patent number
4,804,319
Issue date
Feb 14, 1989
Korf Engineering GmbH
Klaus Langner
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Process for compacting iron particles and subsequent breaking apart...
Patent number
4,769,211
Issue date
Sep 6, 1988
Korf Engineering GmbH
Klaus Langner
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method and apparatus for producing rolled product from metal droplets
Patent number
4,705,466
Issue date
Nov 10, 1987
Oscar Balassa
B22 - CASTING POWDER METALLURGY
Information
Patent Grant
Method of inhibiting degeneration of direct reduced iron
Patent number
4,692,353
Issue date
Sep 8, 1987
Ministry of Industry & Minerals Specialized Institute for Engineering Industries
Jaleel K. Ahmed
C21 - METALLURGY OF IRON
Information
Patent Grant
Briquet strip breaker
Patent number
4,196,891
Issue date
Apr 8, 1980
Midrex Corporation
Charles W. Sanzenbacher
C21 - METALLURGY OF IRON
Information
Patent Grant
Hot discharge direct reduction furnace
Patent number
4,188,022
Issue date
Feb 12, 1980
Midrex Corporation
Donald Beggs
C21 - METALLURGY OF IRON
Information
Patent Grant
Briquet sheet breaking by cooling and bending
Patent number
4,165,978
Issue date
Aug 28, 1979
Midrex Corporation
Charles W. Sanzenbacher
C21 - METALLURGY OF IRON
Information
Patent Grant
Compacted, passivated metallized iron product
Patent number
4,093,455
Issue date
Jun 6, 1978
Midrex Corporation
Wolfgang B. Pietsch
B22 - CASTING POWDER METALLURGY
Patents Applications
last 30 patents
Information
Patent Application
ARRANGEMENT AND PROCESS FOR CHARGING IRON ORE TO, AND/OR DISCHARGIN...
Publication number
20240093330
Publication date
Mar 21, 2024
HYBRIT Development AB
Farzad Mohseni-Mörner
C21 - METALLURGY OF IRON
Information
Patent Application
SEALING A REDUCTION ASSEMBLY
Publication number
20220259685
Publication date
Aug 18, 2022
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Robert Millner
C21 - METALLURGY OF IRON
Information
Patent Application
Process for the Smelting of a Metalliferous Feedstock Material
Publication number
20220220572
Publication date
Jul 14, 2022
African Rainbow Minerals Limited
Petrus Hendrik Ferreira BOUWER
C21 - METALLURGY OF IRON
Information
Patent Application
INTEGRATION OF DR PLANT AND ELECTRIC DRI MELTING FURNACE FOR PRODUC...
Publication number
20210301359
Publication date
Sep 30, 2021
MIDREX TECHNOLOGIES, INC.
Todd Michael ASTORIA
C21 - METALLURGY OF IRON
Information
Patent Application
Method for Carburization of HDRI produced in H2 based Direct Reduct...
Publication number
20210246521
Publication date
Aug 12, 2021
PRIMETALS TECHNOLOGIES AUSTRIA GMBH
Christian Boehm
B22 - CASTING POWDER METALLURGY
Information
Patent Application
METHOD OF UTILIZING FURNACE OFF-GAS FOR REDUCTION OF IRON OXIDE PEL...
Publication number
20200080163
Publication date
Mar 12, 2020
Narong LIMASTIAN
C21 - METALLURGY OF IRON
Information
Patent Application
Method For Treating Animal Waste
Publication number
20170327397
Publication date
Nov 16, 2017
William Blaine
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Application
DIRECT REDUCTION OF IRON (DRI) PELLET TREATMENTS
Publication number
20140238194
Publication date
Aug 28, 2014
ChemTreat, Inc.
Donald C. Roe
B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information
Patent Application
PROCESS AND DEVICE FOR CHARGING INTO A SMELTING UNIT
Publication number
20140196571
Publication date
Jul 17, 2014
SIEMENS VAI METALS TECHNOLOGIES GMBH
Thomas EDER
C21 - METALLURGY OF IRON
Information
Patent Application
RECLAIMING AND INHIBITING ACTIVATION OF DRI DUST AND FINES
Publication number
20140182417
Publication date
Jul 3, 2014
NU-IRON TECHNOLOGY, LLC
David HENDRICKSON
B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information
Patent Application
RECLAIMING AND INHIBITING ACTIVATION OF DRI FINES
Publication number
20130291682
Publication date
Nov 7, 2013
NU-IRON TECHNOLOGY, LLC
David HENDRICKSON
C21 - METALLURGY OF IRON
Information
Patent Application
METHOD FOR TREATING ANIMAL WASTE
Publication number
20130186155
Publication date
Jul 25, 2013
William Blaine
A01 - AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING
Information
Patent Application
PROCESS AND APPARATUS FOR PRODUCING METALS AND/OR PRIMARY METAL PRO...
Publication number
20120313300
Publication date
Dec 13, 2012
Siemens VAI Metals Technologies GmbH
Martin Schmidt
C21 - METALLURGY OF IRON
Information
Patent Application
Process and Device for Charging Into a Smelting Unit
Publication number
20120279356
Publication date
Nov 8, 2012
Thomas Eder
C21 - METALLURGY OF IRON
Information
Patent Application
APPARATUS FOR AND METHOD OF PRODUCTION OF IRON, SEMI STEEL AND REDU...
Publication number
20120111149
Publication date
May 10, 2012
Keki Hormusji GHARDA
C21 - METALLURGY OF IRON
Information
Patent Application
CONVEYOR SYSTEM, COMPOSITE SYSTEM AND METHOD FOR COUPLING METALLURG...
Publication number
20110101577
Publication date
May 5, 2011
SIEMENS VAI METALS TECHNOLOGIES GMBH & CO
Harald Fischer
C21 - METALLURGY OF IRON
Information
Patent Application
HOT BRIQUETTE IRON AND METHOD FOR PRODUCING THE SAME
Publication number
20100068088
Publication date
Mar 18, 2010
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
Hidetoshi Tanaka
C21 - METALLURGY OF IRON
Information
Patent Application
GRANULATED METALLIC IRON SUPERIOR IN RUST RESISTANCE AND METHOD FOR...
Publication number
20090068488
Publication date
Mar 12, 2009
Mesabi Nugget LLC
Koji Tokuda
C21 - METALLURGY OF IRON
Information
Patent Application
Conveyor System, Composite System and Method For Coupling Metallurg...
Publication number
20080289450
Publication date
Nov 27, 2008
Harald Fischer
C21 - METALLURGY OF IRON
Information
Patent Application
Process and Apparatus for Producing Metals and/or Primaryh Metal Pr...
Publication number
20080047397
Publication date
Feb 28, 2008
Martin Schmidt
C21 - METALLURGY OF IRON